java.lang.IllegalArgumentException: Illegal URL with retrofit
i'm trying to call an api in my application i've the following url template test-test.domainname.com/feeds/json/v3/attribute/attribute i'm using retrofit 2 but i get the following fatal exception Illegal URL: test-test.domainname.com and this is my interface public interface Iinterface{ @GET("feeds/json/v3/attribute/"+attribute) Call<ArrayList<result>>getresult(); } can someone help me with this problem ... Yasin Kaçmaz my base URL is here: http://myapiname.azurewebservices.net and feed method is like that : public interface Iinterface{ @GET("/feeds/json/v3/attribute/"+attribute) Call